CN104159261A - Cell updating method and system in repositioning process - Google Patents
Cell updating method and system in repositioning process Download PDFInfo
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- CN104159261A CN104159261A CN201410384488.2A CN201410384488A CN104159261A CN 104159261 A CN104159261 A CN 104159261A CN 201410384488 A CN201410384488 A CN 201410384488A CN 104159261 A CN104159261 A CN 104159261A
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Abstract
The invention provides a cell updating method and system in the repositioning process. The cell updating method comprises the following steps: a target RNC (Radio Network Controller) receives a cell updating message sent by UE (User Equipment) and judges whether the SRNC (Serving Radio Network Controller) identification of a U-RNTI (Radio Network Temporary Identity) in the cell updating message is the same with the identification of the target RNC; if the SRNC identification is different from the identification of the target RNC, according to a corresponding relationship between the U-RNTI in the cell updating message and a new U-RNTI in the target RNC, the new U-RNTI corresponding to the U-RNTI in the cell updating message is inquired and the U-RNTI in the cell updating message is sent to the UE, wherein the new U-RNTI is a U-RNTI distributed by the target RNC; after the UE carries out radio bearing resetting according to the U-RNTI in the cell updating message, the target RNC receives a radio bearing resetting completion message sent by the UE so as to complete cell updating. The cell updating method and system improve user perception and promote key performance indicators of repositioning.
Description
Technical field
The present invention relates to communication technical field, particularly relate to cell update method and system in a kind of repositioning process.
Background technology
Reorientation is the handoff procedure of a kind of RNC (Radio Network Controller, radio network controller), and in existing communication network, the process of reorientation may be summarized to be following four steps:
Step 1:PS (Packet Switch, packet switching) or CS (Circuit Switch, circuit switching) set up the carrying (PS or CS RAB SETUP) of user plane, UE (User Equipment, subscriber equipment) upload measurement report (Measure_Report) to source RNC, source RNC selects to be switched to the community of Target RNC according to the measurement result in measurement report.Source RNC sends reorientation and requires (Relocation Required) message to CN (Core Network, core net) (be specifically as follows MSC (the Mobile Switching Center in CN, mobile switching centre) or SGSN (Serving GPRS SUPPORT NODE, GPRS service node) receive reorientation and require message), reorientation requires message to comprise the resource information that source RNC distributes, U-RNTI (the Universal Mobile Telecommunications System Terrestrial Radio Access Network Radio Network Temporary Identifier that wherein exists source RNC to distribute, universal mobile telecommunications system land radio access web Radio Network Temporary Identifier), RNTI (Radio Network Temporary Identifier, Radio Network Temporary Identifier) at UE and UTRAN (Universal Mobile Telecommunications System Terrestrial Radio Access Network, universal mobile telecommunications system land radio access web) the signal message inside between is as the sign of UE, why RNTI is Radio Network Temporary Identifier, RAN (Residential Access Network, resident's Access Network) be different from the international mobile subscriber identity in CN, the interim identification code of client, mobile device international identity code.U-RNTI is the wherein a kind of of RNTI, and U-RNTI is used for distributing to and will sets up UE that RRC (Radio Resource Control, Radio Resource control) connects to be different from the different UE in same UTRAN.It is that re-positioning request (Relocation Request) message is to Target RNC that CN forwards reorientation requirement message.Above-mentioned reorientation requires the transmission of message and RELOCATION REQUEST message all by means of source RNC (Source RNC), to arrive the transparent vessel (Transparent Container) of Target RNC (Target RNC).
Step 2: Target RNC is received after Relocation Request message, in Target RNC side Resources allocation, sets up wireless link and IU interface and IUB interface transmission bearer in the community of Target RNC.Wherein, set up wireless link and comprise that Target RNC returns to wireless link response (Radio Link Setup Resporse) two processes to target NodeB transmission wireless link request (Radio Link Setup Request) and target NodeB to Target RNC.The resource of distributing comprises the new U-RNTI that Target RNC distributes.Target RNC comprises that by the resource information of distribution new U-RNTI forms radio bearer (the Radio Bearer Reconfiguration) message of resetting and is included in replacement confirmation request (Relocation Request Acknowledge) message and issues CN.CN forwards order (Relocation Command) message of resetting to source RNC.The transmission of above-mentioned replacement confirmation request message and replacement command messages is the transparent vessel (Transparent Container) to source RNC (Source RNC) by means of source Target RNC (Target RNC) all.
Step 3: source RNC receives after Relocation Command message, the Radio Bearer Reconfiguration message wherein comprising is issued to UE, after UE receives, send radio bearer and reset (Radio Bearer Reconfiguration Complete) message to Target RNC.
Step 4: Target RNC is received after Radio Bearer Reconfiguration Complete message, sends (Relocation Complete) message of having reset to CN.Send Iu release command (Iu-Release Command) message to after CN receives source RNC, the resource that source of release RNC is corresponding with UE, comprises that IU carrying discharges, IUB carrying discharges and wireless link discharges, and repositioning process completes.Wherein, wireless link discharges and comprises that RNCXiang source, source NodeB sends wireless link releasing request (Radio Link Deletion Request) and source NodeB returns to wireless link release response (Radio Link Deletion Resporse) two processes to source RNC.
The schematic flow sheet of above-mentioned repositioning process as shown in Figure 1, in step 2 in above-mentioned repositioning process and 3, when, existence poor at wireless environment disturbed or flower arrangement configures, UE is very large there is descending step-out in probability, 1, and the descending step-out in cell-of-origin of source RNC reason may be as follows:, UE has sent out measurement report, but due to descending step-out, can not receive radio bearer replacement message, cause switching RNC.2, with the descending step-out in Target cell of Target RNC.UE receives after unlimited carrying replacement message, can not set up and synchronize with Target cell.
3GPP (3rd Generation Partnership Project, third generation partner program) in TS25.224 V12.0.0 version 5.3.2 chapters and sections and 3GPP TS 25.331 V11.5.0 version 8.5.6 chapters and sections, described UE and the processing mode after descending step-out detected: UE release physical channels resource, close up-downgoing data, physical layer is carried out heavily searching of community, after searching out community, UE will carry out cell update (CELL UPDATE) on Target cell, former because " (radio link failure) radio link failure ".If cell update success, this down wireless link step-out saved, and it is online that UE keeps, otherwise call drop occurs UE.
In repositioning process, the Target cell that in general RNC selects is optimum, and after the descending step-out of UE, the autonomous very large probability in community of selecting is Target cell.In above-mentioned repositioning process, while there is CELL UPDATE (cell update) process in UE on Target RNC, if being source RNC, distributes the U-RNTI carrying in CELL UPDATE message, sign with Target RNC is different, Target RNC adopts DSCR (Directed Signaling Connection Re-establishment, direct signaling retry) strategy discharges UE, requiring UE again to access (only describes in agreement for PS and adopts DSCR mode, but when CS real time business exists, also cannot complete redemption UE online, also adopt in this case DSCR strategy).In cell updating course directly at CCCH (Common Control Channel, Common Control Channel) above discharge RRC and connect and on Target RNC, rebuild RRC connection, this process continues the several seconds, causes CS call drop, PS speed breaks off the base, and the problem such as reorientation index error.
Summary of the invention
The invention provides cell update method and system in a kind of repositioning process, to solve repositioning process small area, upgrade and to cause CS call drop, PS speed breaks off the base, and the problem of reorientation index error etc.
In order to address the above problem, the invention discloses the cell update method in a kind of repositioning process, comprising:
Target radio network controller RNC receives the cell update message that user equipment (UE) sends; Described cell update message comprises the universal mobile telecommunications system land radio access web Radio Network Temporary Identifier U-RNTI that source RNC distributes;
Described Target RNC judges that whether the sign SRNC identity of service wireless network controller of the U-RNTI in described cell update message is identical with the sign of described Target RNC;
If different, described Target RNC is according to the corresponding relation between the new U-RNTI preserving in the U-RNTI in described cell update message and described Target RNC, inquire the new U-RNTI corresponding with U-RNTI in described cell update message, and send U-RNTI in described cell update message to described UE; Wherein, described new U-RNTI is the U-RNTI that described Target RNC distributes;
Described Target RNC, after described UE carries out radio bearer replacement according to the U-RNTI in described cell update message, receives radio bearer that described UE the sends message of having reset, and completes cell update.
Preferably, described Target RNC sends U-RNTI in described cell update message to described UE, comprising:
Described Target RNC is organized cell update acknowledge message and is sent to described UE; Wherein, in described cell update acknowledge message, carry the U-RNTI in the cell update message that described UE sends.
Preferably, described Target RNC receives radio bearer that described UE sends and has reset after message, and described method also comprises:
Described Target RNC sends universal mobile telecommunications system land radio access web mobility message to described UE, notifies described UE that the U-RNTI in described cell update message is updated to new U-RNTI.
Preferably, described Target RNC sends universal mobile telecommunications system land radio access web mobility message to after described UE, and described method also comprises:
Described Target RNC receives the universal mobile telecommunications system land radio access web mobility acknowledge message that described UE sends, and discharges U-RNTI in described cell update message and the corresponding relation of described new U-RNTI.
Preferably, before described Target RNC receives the cell update message of user equipment (UE) transmission, described method also comprises:
Described UE receives the radio bearer replacement message that described source RNC sends, and there is descending step-out in the community of determining described UE and described Target RNC, or described UE does not receive described radio bearer replacement message, determine that descending step-out occurs for described UE and described YuanRNC community.
The invention also discloses the cell update system in a kind of repositioning process, comprising: source radio network controller RNC, Target RNC and user equipment (UE), described Target RNC comprises:
Receiver module, the cell update message sending for receiving described UE; Described cell update message comprises the universal mobile telecommunications system land radio access web Radio Network Temporary Identifier U-RNTI that source RNC distributes;
Whether judgement Executive Module is identical with the sign of described Target RNC for judging the sign SRNC identity of service wireless network controller of U-RNTI of described cell update message; If different, according to the corresponding relation between the new U-RNTI preserving in the U-RNTI in described cell update message and described Target RNC, inquire the new U-RNTI corresponding with U-RNTI in described cell update message, and send U-RNTI in described cell update message to described UE; Wherein, described new U-RNTI is the U-RNTI that described Target RNC distributes;
Cell update module, for after described UE carries out radio bearer replacement according to the U-RNTI of described cell update message, receives radio bearer that described UE the sends message of having reset, and completes cell update.
Preferably, the U-RNTI of described judgement Executive Module in sending described cell update message during to described UE, organizes cell update acknowledge message and is sent to described UE; Wherein, in described cell update acknowledge message, carry the U-RNTI in the cell update message that described UE sends.
Preferably, described Target RNC also comprises:
Notification module, for receive radio bearer that described UE sends in described cell update module, reset after message, send universal mobile telecommunications system land radio access web mobility message to described UE, notify described UE that the U-RNTI in described cell update message is updated to new U-RNTI.
Preferably, described notification module, also for sending universal mobile telecommunications system land radio access web mobility message to after described UE, receive the universal mobile telecommunications system land radio access web mobility acknowledge message that described UE sends, discharge U-RNTI in described cell update message and the corresponding relation of described new U-RNTI.
Preferably, described UE, for receive the cell update message of described UE transmission at described Target RNC before, receive the radio bearer replacement message that described source RNC sends, and there is descending step-out in the community of determining described UE and described Target RNC, or do not receive described radio bearer replacement message, determine that descending step-out occurs for described UE and described YuanRNC community.
Compare with background technology, the present invention includes following advantage:
Target RNC is set up the corresponding relation of new and old U-RNTI, and wherein, new U-RNTI is the U-RNTI that Target RNC distributes, and old U-RNTI is the U-RNTI that source RNC distributes.
In cell update message, carry the U-RNTI that source RNC distributes, while carrying old U-RNTI, according to the corresponding relation of the new and old U-RNTI of old U-RNTI and foundation, determine new U-RNTI, adopt the renewal of agreement small area and two processes of universal mobile telecommunications system land radio access web mobility message to keep UE online, make CS not call drop and PS speed do not fall zero, improve user awareness and promote the KPI (Key Performance Indicator, KPI Key Performance Indicator) of reorientation.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of repositioning process;
Fig. 2 is the cell update method flow chart in a kind of repositioning process in the embodiment of the present invention;
Fig. 3 is the cell update method flow chart in another kind of repositioning process in the embodiment of the present invention;
Fig. 4 is a kind of reorientation flow chart in the embodiment of the present invention;
Fig. 5 is the cell update system construction drawing in a kind of repositioning process in the embodiment of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Below by enumerating several specific embodiments, introduce in detail cell update method and the system in a kind of repositioning process provided by the invention.
Embodiment mono-
Introduce in detail the cell update method in a kind of repositioning process that the embodiment of the present invention provides.
With reference to Fig. 2, show the cell update method flow chart in a kind of repositioning process in the embodiment of the present invention.
Step 100, Target RNC receives the cell update message that UE sends.
In repositioning process, source RNC sends radio bearer replacement message to after UE, if descending step-out occurs UE, UE sends cell update message to Target RNC, and Target RNC receives the cell update message that UE sends.
Described cell update message can comprise the U-RNTI that source RNC distributes.
Step 102, described Target RNC judges that whether the SRNC identity of the U-RNTI in described cell update message is identical with the sign of described Target RNC.
In described cell update message, carry U-RNTI, described U-RNTI is stored in container SRNS RELOCATION INFO (Serving Radio Network Subsystem Relocation Information SRNS Serving Radio Network Subsystem relocation information).
Described SRNC (Serving Radio Network Controller, service wireless network controller) is one of them logic entity of RNC; SRNC identity is the sign of RNC.
Step 104, if the SRNC identity of the U-RNTI in cell update message is different from the sign of Target RNC, described Target RNC is according to the corresponding relation between the new U-RNTI preserving in the U-RNTI in described cell update message and described Target RNC, inquire the new U-RNTI corresponding with U-RNTI in described cell update message, and send U-RNTI in described cell update message to described UE.
Wherein, the U-RNT in described cell update message is the U-RNTI that source RNC distributes, and described new U-RNTI is the U-RNTI that described Target RNC distributes.
In the present embodiment, the U-RNTI in described cell update message can be called old U-RNTI, distinguishes with the new U-RNTI preserving in described Target RNC.There is corresponding relation in described old U-RNTI and described new U-RNTI, this corresponding relation is set up in advance by described Target RNC.
Step 106, described Target RNC, after described UE carries out radio bearer replacement according to described old U-RNTI, receives radio bearer that described UE the sends message of having reset, and completes cell update.
After described UE receives described old U-RNTI, according to described old U-RNTI, carry out radio bearer replacement, then, described UE sends radio bearer and has reset message to described Target RNC, represents that cell update completes.
On the contrary, if the SRNC identity of the U-RNTI in described cell update message is identical with the sign of described Target RNC, described UE directly carries out radio bearer replacement according to the U-RNTI in described cell update message, described UE sends radio bearer and has reset message to Target RNC, completes cell update.
In sum, in the embodiment of the present invention, Target RNC is set up the corresponding relation of new and old U-RNTI, and wherein, new U-RNTI is the U-RNTI that Target RNC distributes, and old U-RNTI is the U-RNTI that source RNC distributes.
In cell update message, carry the U-RNTI that source RNC distributes, while carrying old U-RNTI, according to the corresponding relation of the new and old U-RNTI of old U-RNTI and foundation, determine new U-RNTI, adopt the renewal of agreement small area and two processes of universal mobile telecommunications system land radio access web mobility message to keep UE online, make CS not call drop and PS speed do not fall zero, improve user awareness and promote the KPI of reorientation.
Embodiment bis-
Introduce in detail the cell update method in a kind of repositioning process that the embodiment of the present invention provides.
With reference to Fig. 3, show the cell update method flow chart in a kind of repositioning process in the embodiment of the present invention.
Step 200, described UE receives the radio bearer replacement message that described source RNC sends, and determines that descending step-out occurs in the community of described UE and described Target RNC.
Preferably, described step 200 or can be: described UE does not receive described radio bearer replacement message, determines that descending step-out occurs for described UE and described YuanRNC community.
After source RNC sends radio bearer replacement message, there is descending step-out in the community of described UE and described Target RNC, or described UE does not receive described radio bearer replacement message, determines with described YuanRNC community descending step-out occurs, and performs step 202.Wherein, descending step-out occurs in the community of described UE and described Target RNC is that described UE receives after radio bearer replacement message, can not set up and synchronize with Target cell.
Step 202, Target RNC receives the cell update message that UE sends.
Wherein, in described cell update message, carry the U-RNTI that source RNC distributes.
Step 204, described Target RNC judges that whether the SRNC identity of the U-RNTI in described cell update message is identical with the sign of described Target RNC; If the SRNC identity of the U-RNTI in described cell update message is identical with the sign of described Target RNC, perform step 206, if the SRNC identity of the U-RNTI in described cell update message is different from the sign of described Target RNC, perform step 208.
Step 206, if the SRNC identity of the U-RNTI in described cell update message is identical with the sign of described Target RNC, described UE directly carries out radio bearer replacement according to the U-RNTI in described cell update message, described UE sends radio bearer and has reset message to Target RNC, complete cell update, finish this flow process.
Step 208, if the SRNC identity of the U-RNTI in described cell update message is different from the sign of described Target RNC, described Target RNC is according to the corresponding relation between the new U-RNTI preserving in the U-RNTI in described cell update message and described Target RNC, inquire the new U-RNTI corresponding with U-RNTI in described cell update message, and send U-RNTI in described cell update message to described UE.
Wherein, the U-RNT in described cell update message is the U-RNTI that source RNC distributes, and described new U-RNTI is the U-RNTI that described Target RNC distributes.
In the present embodiment, the U-RNTI in described cell update message can be called old U-RNTI, distinguishes with the new U-RNTI preserving in described Target RNC.There is corresponding relation in described old U-RNTI and described new U-RNTI, this corresponding relation is set up in advance by described Target RNC.
For example, there is corresponding relation with new U-RNTI A ' in old U-RNTI A; There is corresponding relation in old U-RNTI B and new U-RNTI B '.If the U-RNTI in described cell update message is old U-RNTI B, described Target RNC is according to the corresponding relation between the new U-RNTI preserving in the old U-RNTI B in described cell update message and described Target RNC, inquire the new U-RNTI B ' corresponding with old U-RNTI B in described cell update message, and described old U-RNTI B is sent to described UE.
In above-mentioned steps 208, described Target RNC sends described old U-RNTI to described UE, can be: described Target RNC is organized cell update acknowledge message and is sent to described UE.But in actual applications, those skilled in the art also can be according to actual needs, adopt other to UE, to send the form of cell update acknowledge message, the embodiment of the present invention does not send described old U-RNTI to other and limits to the mode of described UE.
Wherein, in described cell update acknowledge message, can carry the U-RNTI in the cell update message that described UE sends.
Step 210, described Target RNC, after described UE carries out radio bearer replacement according to described old U-RNTI, receives radio bearer that described UE the sends message of having reset, and completes cell update.
Described UE, after receiving described cell update acknowledge message, carries out radio bearer replacement according to the requirement in described cell update acknowledge message, and then described UE sends radio bearer and reset message to described Target RNC.
Described Target RNC receives described radio bearer and has reset after message, sends and has reset message to CN, completes reorientation flow process.
Step 212, described Target RNC sends universal mobile telecommunications system land radio access web mobility message to described UE, notifies described UE that the U-RNTI in described cell update message is updated to new U-RNTI.
After described UE is updated to new U-RNTI by the U-RNTI in described cell update message, sends universal mobile telecommunications system land radio access web mobility and confirm message to described Target RNC.
Step 214, described Target RNC, after receiving the universal mobile telecommunications system land radio access web mobility acknowledge message that described UE sends, discharges U-RNTI in described cell update message and the corresponding relation of described new U-RNTI.
In sum, in the embodiment of the present invention, Target RNC is set up the corresponding relation of new and old U-RNTI, and wherein, new U-RNTI is the U-RNTI that Target RNC distributes, and old U-RNTI is the U-RNTI that source RNC distributes.
In cell update message, carry the U-RNTI that source RNC distributes, while carrying old U-RNTI, according to the corresponding relation of the new and old U-RNTI of old U-RNTI and foundation, determine new U-RNTI, adopt the renewal of agreement small area and two processes of universal mobile telecommunications system land radio access web mobility message to keep UE online, CS not call drop and PS speed does not fall zero, improves user awareness and promotes the KPI of reorientation.
Embodiment tri-
Introduce in detail the cell update method in a kind of repositioning process that the embodiment of the present invention provides.
The present embodiment is received after the Relocation Request message of source RNC at target side RNC, from container SRNS RELOCATION INFO wherein, obtain the U-RNTI that source RNC distributes, Target RNC distributes after new U-RNTI, sets up the corresponding relation of new and old U-RNTI.Follow-up while receiving the CELL UPDATE message of carrying old U-RNTI, can use new U-RNTI corresponding to old U-RNTI inquiry, old U-RNTI is assembled in CELL UPDATE CONFIRM message and issues UE, in CELL UPDATE CONFIRM message, can carry old U-RNTI (if DCCH is (Dedicated Control Channel, while Dedicated Control Channel) above sending CELL UPDATE CONFIRM message, need to be at MAC PDU (Protocol Data Unit Protocol Data Unit, media access control layer protocol Data Unit) in head, indicate UE to be designated old U-RNTI).UE carries out the configuration in CELL UPDATE CONFIRM, sends Radio Bearer Reconfiguration Complete message to Target RNC on new link.Target RNC is received after Radio Bearer Reconfiguration Complete message, represents cell update success, and this down wireless link step-out saved, and it is online that UE keeps.Target RNC thinks that reorientation is successful simultaneously.Because the U-RNTI storing in UE is now old, need to be updated to the new U-RNTI that Target RNC distributes.Target RNC is carried out universal mobile telecommunications system land radio access web mobility information (UTRAN Mobility Information) process, the old U-RNTI upgrading in UE is the new U-RNTI that Target RNC distributes, after UE is updated successfully, Target RNC discharges the corresponding relation of new and old U-RNTI, only retains new U-RNTI.Wherein, UTRAN Mobility Information process can be with reference to the protocol procedures of 3GPP TS 25.331 agreement V11.5.0 chapters and sections 14.12.4.2.
In the time of can completing reorientation by the CELL UPDATE in agreement and UTRAN Mobility Information process, while causing CELL UPDATE that U-RNTI do not upgrade to occur due to descending step-out, do not discharge UE, the deficiency of having evaded existing protocol and employing DSCR flow process, improve user awareness and promote KPI (Key Performance Indicator, KPI Key Performance Indicator).During specific implementation: receive after Relocation Request message at Target RNC, any stage receives after the CELL UPDATE message of the U-RNTI that carries source RNC distribution, can carry out reorientation and CELL UPDATE and UTRAN Mobility Information process.
With reference to Fig. 4, show hypothesis and send after Radio Bearer Reconfiguration at source RNC, after UE step-out, report the reorientation flow chart of the CELL UPDATE message of the U-RNTI that carries source RNC distribution.Flow process in described Fig. 4 may be summarized to be following step:
Step 1: PS or CS set up the carrying (PS or CS RAB SETUP) of user plane, UE uploads measurement report (Measure_Report) to S-RNC (Source RNC, source RNC), source RNC selects to be switched to the community of Target RNC according to the measurement result in measurement report.Source RNC sends reorientation and requires (Relocation Required) message to CN, and reorientation requires message to comprise the resource information that source RNC distributes, the U-RNTI that wherein exists source RNC to distribute.It is that re-positioning request (Relocation Request) message is to Target RNC that CN forwards reorientation requirement message.The transmission of above-mentioned reorientation requirement message and RELOCATION REQUEST message is the transparent vessel (Transparent Container) to Target RNC by means of source RNC all.
Step 2: Target RNC is received after Relocation Request message, in Target RNC side Resources allocation, sets up wireless link and IU interface and IUB interface transmission bearer in the community of Target RNC.Wherein, set up wireless link and comprise that Target RNC returns to wireless link response (Radio Link Setup Resporse) two processes to target NodeB transmission wireless link request (Radio Link Setup Request) and target NodeB to Target RNC.The resource of distributing comprises the new U-RNTI that Target RNC distributes.Target RNC comprises that by the resource information of distribution new U-RNTI forms radio bearer (the Radio Bearer Reconfiguration) message of resetting and is included in replacement confirmation request (Relocation Request Acknowledge) message and issues CN.CN forwards order (Relocation Command) message of resetting to source RNC.The transmission of above-mentioned replacement confirmation request message and replacement command messages is the transparent vessel (Transparent Container) to source RNC by means of source Target RNC (Target RNC) all.
Step 3: source RNC receives after Relocation Command message, and the Radio Bearer Reconfiguration message wherein comprising is issued to UE, the descending step-out of UE, sends CELL UPDATE message to Target RNC.
Step 4: Target RNC is received after CELL UPDATE, different with the sign of Target RNC according to the SRNC identity judgement of U-RNTI in message, inquire about the corresponding table of new and old U-RNTI, get corresponding new U-RNTI, organize CELL UPDATE CONFIRM message that old U-RNTI is sent to UE.
Step 5: UE receives after CELL UPDATE CONFIRM message, enables after the new configuration requiring in message, sends Radio Bearer Reconfiguration Complete message to Target RNC.
Step 6: Target RNC is received after Radio Bearer Reconfiguration Complete message, sends Relocation Complete message to CN, completes reorientation flow process.Target RNC sends UTRAN Mobility Information notice UE renewal U-RNTI to UE simultaneously.
Step 7: Target RNC is received after the UTRAN Mobility Information Confirm message of UE response, discharged new and old U-RNTI corresponding relation.
Step 8: CN sends Iu release command (Iu-Release Command) message to source RNC, and the resource that source of release RNC is corresponding with UE, carries out IU and IUB carrying discharges, and wireless link release, and repositioning process completes.Wherein, wireless link discharges and comprises that RNCXiang source, source NodeB sends wireless link releasing request (Radio Link Deletion Request) and source NodeB returns to wireless link release response (Radio Link Deletion Resporse) two processes to source RNC.
At Target RNC, receive other stages after CELL UPDATE message, as long as inquire, there is new and old U-RNTI corresponding relation, reorientation flow process be can continue to carry out, just need to after sending Relocation Request Acknowledge message to source RNC, CELL UPDATE and UTRAN Mobility Information process be carried out.
In sum, in the embodiment of the present invention, Target RNC is set up the corresponding relation of new and old U-RNTI, and wherein, new U-RNTI is the U-RNTI that Target RNC distributes, and old U-RNTI is the U-RNTI that source RNC distributes.
In cell update message, carry the U-RNTI that source RNC distributes, while carrying old U-RNTI, according to the corresponding relation of the new and old U-RNTI of old U-RNTI and foundation, determine new U-RNTI, no longer carrying out DSCR strategy release UE accesses again, do not revise agreement, the deficiency of evading the DSCR flow process of existing protocol employing, but adopt the renewal of agreement small area and two processes of universal mobile telecommunications system land radio access web mobility message to keep UE online, CS not call drop and PS speed does not fall zero, improves user awareness and promotes the KPI of reorientation.
Embodiment tetra-
Introduce in detail the cell update system in a kind of repositioning process that the embodiment of the present invention provides.
With reference to Fig. 5, show the cell update system construction drawing in a kind of repositioning process in the embodiment of the present invention.
Described system can comprise: source radio network controller RNC300, Target RNC 302, and user equipment (UE) 304.Described Target RNC 302 can be for realizing the device of said method embodiment.Described Target RNC 302 can comprise: receiver module 3020, judgement Executive Module 3022, cell update module 3024, notification module 3026.
Described receiver module 3020, the cell update message sending for receiving described UE304.
Described cell update message can comprise the universal mobile telecommunications system land radio access web Radio Network Temporary Identifier U-RNTI that source RNC300 distributes.
Whether described judgement Executive Module 3022 is identical with the sign of described Target RNC 302 for judging the sign SRNC identity of service wireless network controller of U-RNTI of described cell update message; If different, according to the corresponding relation between the new U-RNTI preserving in the U-RNTI in described cell update message and described Target RNC 302, inquire the new U-RNTI corresponding with U-RNTI in described cell update message, and send U-RNTI in described cell update message to described UE; Wherein, the U-RNT in described cell update message is the U-RNTI that source RNC300 distributes, and described new U-RNTI is the U-RNTI that described Target RNC 302 distributes.
Preferably, the U-RNTI of described judgement Executive Module 3022 in sending described cell update message during to described UE304, organizes cell update acknowledge message and is sent to described UE304; Wherein, in described cell update acknowledge message, carry the U-RNTI in the cell update message that described UE304 sends.
Described cell update module 3024, for after described UE304 carries out radio bearer replacement according to the U-RNTI of described cell update message, receives radio bearer that described UE304 the sends message of having reset, and completes cell update.
Described notification module 3026, for receive radio bearer that described UE304 sends in described cell update module 3024, reset after message, send universal mobile telecommunications system land radio access web mobility message to described UE304, notify described UE304 that the U-RNTI in described cell update message is updated to new U-RNTI.
Described notification module 3026, also for sending universal mobile telecommunications system land radio access web mobility message to after described UE304, receive the universal mobile telecommunications system land radio access web mobility acknowledge message that described UE304 sends, discharge U-RNTI in described cell update message and the corresponding relation of described new U-RNTI.
Described UE304, for receive the cell update message of described UE304 transmission at described Target RNC 302 before, receive the radio bearer replacement message that described source RNC300 sends, and determine that descending step-out occurs for described UE304 and described Target RNC 302 community, or do not receive described radio bearer replacement message, determine that descending step-out occurs in the community of described UE304 and described source RNC300.
The present embodiment cell update system is for realizing the cell update method in the corresponding repositioning process of aforementioned a plurality of embodiment of the method, in the cell update system of the present embodiment, Target RNC is set up the corresponding relation of new and old U-RNTI, wherein, new U-RNTI is the U-RNTI that Target RNC distributes, and old U-RNTI is the U-RNTI that source RNC distributes.
In cell update message, carry the U-RNTI that source RNC distributes, while carrying old U-RNTI, according to the corresponding relation of the new and old U-RNTI of old U-RNTI and foundation, determine new U-RNTI, adopt the renewal of agreement small area and two processes of universal mobile telecommunications system land radio access web mobility message to keep UE online, CS not call drop and PS speed does not fall zero, improves user awareness and promotes the KPI of reorientation.
For system embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, relevant part is referring to the part explanation of embodiment of the method.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Cell update method and system in a kind of the repositioning process above embodiment of the present invention being provided, be described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (10)
1. the cell update method in repositioning process, is characterized in that, comprising:
Target radio network controller RNC receives the cell update message that user equipment (UE) sends; Described cell update message comprises the universal mobile telecommunications system land radio access web Radio Network Temporary Identifier U-RNTI that source RNC distributes;
Described Target RNC judges that whether the sign SRNC identity of service wireless network controller of the U-RNTI in described cell update message is identical with the sign of described Target RNC;
If different, described Target RNC is according to the corresponding relation between the new U-RNTI preserving in the U-RNTI in described cell update message and described Target RNC, inquire the new U-RNTI corresponding with U-RNTI in described cell update message, and send U-RNTI in described cell update message to described UE; Wherein, described new U-RNTI is the U-RNTI that described Target RNC distributes;
Described Target RNC, after described UE carries out radio bearer replacement according to the U-RNTI in described cell update message, receives radio bearer that described UE the sends message of having reset, and completes cell update.
2. method according to claim 1, is characterized in that, described Target RNC sends U-RNTI in described cell update message to described UE, comprising:
Described Target RNC is organized cell update acknowledge message and is sent to described UE; Wherein, in described cell update acknowledge message, carry the U-RNTI in the cell update message that described UE sends.
3. method according to claim 1, is characterized in that, described Target RNC receives radio bearer that described UE sends and reset after message, and described method also comprises:
Described Target RNC sends universal mobile telecommunications system land radio access web mobility message to described UE, notifies described UE that the U-RNTI in described cell update message is updated to new U-RNTI.
4. method according to claim 3, is characterized in that, described Target RNC sends universal mobile telecommunications system land radio access web mobility message to after described UE, and described method also comprises:
Described Target RNC receives the universal mobile telecommunications system land radio access web mobility acknowledge message that described UE sends, and discharges U-RNTI in described cell update message and the corresponding relation of described new U-RNTI.
5. method according to claim 1, is characterized in that, before described Target RNC receives the cell update message of user equipment (UE) transmission, described method also comprises:
Described UE receives the radio bearer replacement message that described source RNC sends, and there is descending step-out in the community of determining described UE and described Target RNC, or described UE does not receive described radio bearer replacement message, determine that descending step-out occurs for described UE and described YuanRNC community.
6. the cell update system in repositioning process, comprising: source radio network controller RNC, Target RNC and user equipment (UE), it is characterized in that, and described Target RNC comprises:
Receiver module, the cell update message sending for receiving described UE; Described cell update message comprises the universal mobile telecommunications system land radio access web Radio Network Temporary Identifier U-RNTI that source RNC distributes;
Whether judgement Executive Module is identical with the sign of described Target RNC for judging the sign SRNC identity of service wireless network controller of U-RNTI of described cell update message; If different, according to the corresponding relation between the new U-RNTI preserving in the U-RNTI in described cell update message and described Target RNC, inquire the new U-RNTI corresponding with U-RNTI in described cell update message, and send U-RNTI in described cell update message to described UE; Wherein, described new U-RNTI is the U-RNTI that described Target RNC distributes;
Cell update module, for after described UE carries out radio bearer replacement according to the U-RNTI of described cell update message, receives radio bearer that described UE the sends message of having reset, and completes cell update.
7. system according to claim 6, is characterized in that, the U-RNTI of described judgement Executive Module in sending described cell update message during to described UE, organizes cell update acknowledge message and be sent to described UE; Wherein, in described cell update acknowledge message, carry the U-RNTI in the cell update message that described UE sends.
8. system according to claim 6, is characterized in that, described Target RNC also comprises:
Notification module, for receive radio bearer that described UE sends in described cell update module, reset after message, send universal mobile telecommunications system land radio access web mobility message to described UE, notify described UE that the U-RNTI in described cell update message is updated to new U-RNTI.
9. system according to claim 8, is characterized in that,
Described notification module, also for sending universal mobile telecommunications system land radio access web mobility message to after described UE, receive the universal mobile telecommunications system land radio access web mobility acknowledge message that described UE sends, discharge U-RNTI in described cell update message and the corresponding relation of described new U-RNTI.
10. system according to claim 6, is characterized in that,
Described UE, for receive the cell update message of described UE transmission at described Target RNC before, receive the radio bearer replacement message that described source RNC sends, and there is descending step-out in the community of determining described UE and described Target RNC, or do not receive described radio bearer replacement message, determine that descending step-out occurs for described UE and described YuanRNC community.
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